1220440213241 has 16 divisors (see below), whose sum is σ = 1285727385600. Its totient is φ = 1156211866128.

The previous prime is 1220440213219. The next prime is 1220440213249. The reversal of 1220440213241 is 1423120440221.

It is not a de Polignac number, because 1220440213241 - 2¹⁸ = 1220439951097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220440213241.

It is not an unprimeable number, because it can be changed into a prime (1220440213249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 884000 + ... + 1795086.

It is an arithmetic number, because the mean of its divisors is an integer number (80357961600).

Almost surely, 2^{1220440213241} is an apocalyptic number.

It is an amenable number.

1220440213241 is a deficient number, since it is larger than the sum of its proper divisors (65287172359).

1220440213241 is a wasteful number, since it uses less digits than its factorization.

1220440213241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911668.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 1220440213241 its reverse (1423120440221), we get a palindrome (2643560653462).

The spelling of 1220440213241 in words is "one trillion, two hundred twenty billion, four hundred forty million, two hundred thirteen thousand, two hundred forty-one".